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1前言元宝山露天煤矿位于内蒙古赤峰市元宝山区建昌营镇境内，是1990年10月15日开工的国家重点项目。设计原煤年生产能力为500万t。采用综合开采工艺，即：在第四纪层采用2套轮斗系统的连续工艺，在含煤地层采用单斗、汽车、半固定破碎机胶带输送机半连续开采工艺。排土设备选
1 Introduction Yuanbaoshan Opencast Mine is located in Jianchangying Town, Yuanbaoshan District, Chifeng City, Inner Mongolia. It is a national key project started on October 15, 1990. Design coal annual production capacity of 5 million t. A comprehensive mining process is adopted, that is, a continuous process using two sets of wheel bucket systems in the quaternary layer and a semi-continuous mining process of the single-bucket, automobile and semi-fixed crusher belt conveyors in the coal-bearing strata. Dumping equipment selection